by heart
by memory

She was surrounded by memories and light, but not lost within them.

She'd never be able to look ahead while she lived here, surrounded by memories.

Now by memory inspired, turn wheel again to the whole of the wall.

He found his way by memory up the shadows to the top of the cliff.

First of all we are in a land cleansed by memory.

Your pilot will be operating by memory and touch alone.

He went up the landing by memory, one, two, three.

Bear asked in a voice made soft by memory, empathy, and understanding.

I had opened my mind to invasion by alien memories.

Knowledge was lost and some distorted by failing memories, old skills were gone.